the define function is to be used on the global scope of your
application. This is helpful to assign Configurations Options and other
data that you do not will move. For the Class Constants you define the
Constant only fo the Class where you are working.
Please read the documentation about this on PHP.NET
http://de.php.net/manual/en/language.oop5.constants.php
Re-read what he said.
What he wants to do is use a previous class constant in another one.
With defines, you can do:
define('VAR_1', 'This is var 1');
define('VAR_2', VAR_1 . ' plus some more on the end');
You cannot do a similar thing with class constants (you get parse
errors), he's asking why.
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